Modpack support (#60)

* Modpack support

* Finish feature

* Tauri errors fix (#61)

* async impl

* working

* fmt and redundancy

* moved ? to if let Ok block

* Finish modpacks support

* remove generated file

* fix compile err

* fix lint

* Fix code review comments + forge support

---------

Co-authored-by: Wyatt Verchere <wverchere@gmail.com>

theseus_gui/src-tauri/src/api/mod.rs

@@ -4,6 +4,7 @@ use thiserror::Error;
 
 pub mod auth;
 
+pub mod pack;
 pub mod process;
 pub mod profile;
 pub mod profile_create;